Improvement in cupola and other furnaces



2 Sheets--Sheet1..

L. QUINCKE. Cupola and other Furnaces. N0. 143,453. Patented Oct.7,1873.

Het awr Furnace 2Sheets--Sheet2. L. HUINCKE. Cupnia and other Furnaces.

N0. 143,463. Patented0ct.7,1873.

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LOIS QUINOKE, fOF JOLIET, ILLINOIS, ASSIGNOR OF ONE-HALF HIS RIGHT TOFRANZ MUELLER, OF OARONDELET, MISSOURI.

IMPROVEMENT IN CUPOLA AND OTHER FURNACES.

Specification forming part of Letters Patent No. 143,463, dated October7, 18735 application filed February 24, 1873.

To all whom t may concern:

Be it known that I, Lois QUINOKE, of the city of Joliet, in Will countyand State of Illinois, have invented certain Improvements in Method ofForcing a Hot-Air Blast into the Cupola for Melting Iron, of which thefollowing is a specication:

The object of my invention consists in the combination of certaindevices, hereinafter particularly described, by means of which a hot-airblast is blown into the cupola at three or more points as is moreparticularly described hereina er.

In order to enable others skilled in the art to make and use myinvention, I will proceed to explain my invention, reference being hadto the annexed drawings, and the letters of reference thereon, making apart of this specification.

In the drawings, Figure 1 is a plan view on the top of my invention;Fig. 2, a vertical section through the center of the fan and hotairfurnace; Fig. 3, a perspective view of the hot-air receiver or wind-box;Fig. 4, a vertical section through the center ofthe cupola 5 Figs. 5 and6, vertical sections through the centers of the tuyeres 5 Fig. 7, avertical section through the center of the windgage 5 and Fig. 8, acrosssectional view of the said wind-gage or pressure-gage.

The mode of operation and description of the construction of my devicewill be readily understood by a reference to said figures.

In Fig. 1 the several principal portions. of the device, consisting ofthe cupola D, watertank W, wind box or receiver B, and hot-air furnaceF, and fans m, appear in combination, and connected together by means ofconnecting-pipes a b c d, as shown, ready for work; the water-tank Wfurnishing water through the pipes c f g to cool the tuyeres t, as willbe hereinafter more particularly set forth.

Fig. 2 is a detached longitudinal and vertical sectional view of thehot-air furnace or retort F inclosed in its case C, and connected to orwith the fans m by means of the pipes a. These fans are shown three innumber in Fig. 1, but may be of any number. A blast of cold air isforced into the furnace or retort F by means of the fan m, nom whence itpasses heated to the wind box or receiver B, and thence to the cupolathrough the pipes l) c d, discharging into the same at three equidistantpoints at its sides, through the double conic tuyeres t, .as shown, theair becoming thoroughly heated in passing through said retort or hot-airfurnace F.

The conical projections l? P P, Fig. 2, are attached to the hot-airretort simply to give more heating-surface thereto. The use ofthe windbox or receiver B is for the purpose of holding a volume of compressedair, so as to take the advantage of its elasticity, so a uniform, steadycurrent of air will discharge into the cupola therefrom.

The tuyeres are double hollow cones, or may be a single cone, as shownin Fig 5. Fig. (i shows a vertical section of the tuyeres t, with thenozzle of the blast-pipe therein, the openings at the top and bottombeing intended for the entrance and discharge of water from the tank Wto keep them cool.

For the purpose of measuring the pressure and velocity of the hot-airblast into the cupola, I use the device shown in Figs. 7 and 8, and ato, Fig. 1. Figs. 7 and 8 show more particularly the construction andoperation of the device which is situated in the pipe b. z is a ilatstrip of metal, having a curved cover of wood, one edge, or the rearedge, being attached to the rear edge of the strip or floor z, leavingthe front end open at o. This device rests on the bottom of the interiorof the pipe b at its sides, as shown in Fig. 8, leaving a passage forthe air all around it. As the air passes a blast is forced into theopening at its front end at c, which has the eect of raising the deviceup, so the wire or rod r attached to the top thereof may indicate theamount of pressure and the velocity of the air on a scale shown on theface o.

The advantages of a hot-air blast into a cupola for melting iron is wellknown to every one acquainted with that business, and I claim, by thecombination and use of the devices shown, to have a superior method ofapplying a hot-air blast thereto.

The mode of heating the hot-air furnace or retort F is by fire in thefurnace beneath s. The same is supported in its ease C on bars H, orother supports, in such a. manner that it may be entirely free from theease C, so the re may pass entirely around it. k being the chimney orsmokesteek for the escape of the smoke. his a hose, connected to theWatertank W, the use of Which is to cool off the metal after itsdischarge from the cupole into a cooling-pan ofthe ordinary pattern.

Having thus described my invention, what I claim als new, and desire tosecure by Letters Patent, is as follows:

The Wind-gage described, consisting of the combination and arrangementof the parts z x r o and pipe b, for the purpose set forth.

LOIS QUINOKE.

Witnesses:

Trios. H. HUTCHINS, MICHAEL BRIZON.

